Bug 407652

Summary:	Maximizing a window by dragging turns mouse cursor into a black square
Product:	[Plasma] kwin	Reporter:	Lucia Mrenica <lucia.mrenica>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	kde, lucia.mrenica, mcmailface, nate
Priority:	NOR
Version First Reported In:	5.19.90
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Video of the bug in action. Recorded with a camera.

Description Lucia Mrenica 2019-05-17 16:25:45 UTC

STEPS TO REPRODUCE
1. Grab a window like Dolphin or Konsole and maximize it by "throwing" it to the upper screen edge.

OBSERVED RESULT
Until mouse cursor leaves the titlebar it turns into a black square

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.15.90
KDE Frameworks Version: 5.58
Qt Version: 5.13.0 beta3
Kwin Version: master (today - 17.05.2019)
Kwayland Version: master (today - 17.05.2019)

ADDITIONAL INFORMATION
On wayland, might be caused by mixing diferent versions of software?

Comment 1 HM 2020-08-02 07:24:44 UTC

Bug is still present. This is only present while using wayland. This bug must have been mistakenly marked resolved as this is not present while using an X session.

I've found that this issue also appears when dragging the window to a screen edge with a panel as well.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.72.0
Qt Version: 5.15.0
Kernel Version: 5.7.11-arch1-1
OS Type: 64-bit
Processors: 12 × AMD Ryzen 5 2600 Six-Core Processor
Memory: 15.6 GiB of RAM
Graphics Processor: Radeon RX Vega 56

Comment 2 HM 2020-08-02 07:26:07 UTC

Created attachment 130567 [details]
Video of the bug in action. Recorded with a camera.

Comment 3 David Edmundson 2020-09-17 22:37:44 UTC

Thanks for the video. 

As a somewhat unhelpful comment I am unable to reproduce this.

Matej, you changed the version, I assume that means you reproduced it on 5.19.90?

Comment 4 Lucia Mrenica 2021-01-26 11:40:04 UTC

@HM do you still have this issue?

Comment 5 Lucia Mrenica 2021-02-16 18:16:31 UTC

I have not seen this issue in a while now, if someone has it we can reopen.

Comment 6 HM 2021-02-19 15:03:25 UTC

(In reply to Matej Mrenica from comment #4)
> @HM do you still have this issue?

I tried to reproduce this now(recently) and was unable to do so in both my Arch setup and a KDE Neon VM. Looks like its gone.